A Raman-delayed nonlinearity for elliptically polarized ultrashort optical pulses Alexandre Stathopulos, Stefan Skupin and Luc Bergé Eur. Phys. J. Spec. Top., 232 13 (2023) 2285-2292 Published online: 21 November 2022 DOI: 10.1140/epjs/s11734-022-00671-x